This is a good (and fair) question. Sequence doesn't appear to do a ton of stuff the box, without applying a theme from the site or one of your own design.

That is, however, why I love this idea. It looks like this provides a good foundation for creating a slider; a nice interface, well documented options and callbacks, and nothing more.

I feel like I can actually build something of my own with this instead of clobbering an existing slider plugin with my own code until it does what I want. This is a much sharper tool than a widget pre-bundled with style defaults.